Roofing element



Aug, 28, 1928. 1,681,975

I. DAVIS ROOFING ELEMENT Filed Nov. 2, 1925 INVENTOR l! [51100225 DA V15 1! 7 73 BY J9 i 1 Z 7d w4 ATTORNEY accents Appiieetion file November his invention is to provide ohstruction for roofing eleiiexihle roof covering means "ig means therefor. jest oi"; this invention is to cvecl means for iocking toto a. roof asphelt'or coms or strips. c of this invention is to i "nemloet adapted. the lower margins-i edge or elesieht to engage the a when leid on e mher of such shepe as to laying of Shii:1gl8S01 roofing' elemehtsih superposed position on a root, hy iiimisliihs; guides to cause the members to move to their proper positions.

' Another o-hject is to so arrange the hooked memher relative to the mergiii of the fiexihle element to which it is attached as to sure. uniform expansion encl contraction oi" the flexible element with changes of tempetature and thus prevent breaking of it turned edge A turthet object is toprovide simple anoi ecohomicei means for obtaining an efiicicnt roof covering which is qapehle of resisting en rance of sleet, snow-min and. Windhotween the roofing elemen s With these encl othee' ohjects in View,

inventioii consists in the construction, i ii ement combination of elements i eiter set forth, pointed out in the clwims illustrated by the accompanying drawing in Wl1i3l1 Figure l is e plain View showing a section' oi toofihg coostmcted according to my in- 'vehtion,

- ViSW of one ut invehtioh Iemploy e so STATES- JDQVIS, DES .MINES, IOWA, Til "iii? 03? 13% LEQENES, IOWA, A'CGFJEQ TIQX F "Retest object is to provide an im- With grip the shine'ie materiel.

Figure 2 is t perspective View showing the orifice...

flexible or senflexible elemew" member 10, whlch may he i e strip shingle mode in e core suitable combination of gospel the like it may he of coiistmction. The shingle hotly i she. L along, its owel. margin is i spaced projections .I 12 of substentia projections 11 of desired upon the length shingle is of strip owe a any event the joint Poe-twee same POW would come die of a notch 12, which would. also so the case Where the shingles are of inclivicluei o1 single form The projections notches may be or any desired depth but seici tches prefereblv are not extended past the ce--te oi the shingie. Fixed to the lower margin of each pro 16015103111 is a metallic clip 0K fastening member 13 which is of a length corresponci- 111g substentialiy to the Width of the end of the projection. Each clip 13 is formed a tow of teeth A- sti'uck'thereii'om and progectmg upwsrdly' end else with e'simii211 row of teeth 15 projecting clownwercily. The end marginal portioh of the projection 11 is bent or folded cler to embrace the outer edge 13 and the teeth if and 15 are cameo specti'vely to penetrate the body of seic jectioh adjacent the fold, encl uncle? portion which has been p 16, seirl teeth ei'e clenched to effectively The projection of tee h in both directions i is 1 the hlngle metei' the hccly, sti ection which "emperature expei siozi rmeclie is provided with teeth struck upwardly therefrom and penetrating the shingle ma terial.

In practical use successive rows or strips are laid as in Figure 1 in overlapping relation and with the projections and notches of adjacent rows or strips in staggered relation. A. nail such as 21 is driven through each shingle or strip 10 adjacentthe center or each notch 12 and spaced suitably from the margin thereof. The clip 13 of each projection 11 is caused to engage the rear margin of a notch 12 of the subjacent row or strip 10 in the manner shown, to hold the end of the projection tight to the root. The projection 11 preferably are of slightly less width at the free end than where they are attached to the body of the shingle, and consequently the notches 12 are of slightly greater width at their open than at the closed end,the side margins sloping uniformly and symmetrically. The super posed shingle or strip is placed in position by inserting the ends of the projectionsll in the notche 12 near the open end of the latter and moving them rearwardly until the clips 13 engage the side margins of the notches) The clips 13 are tomes with laterally openin notches 22, 23 cut from the ends of the 0 set portion 17, which notches 22 and 23 engage and receive the side margins of the projections 11 of the" subjacent row as the strip being placed is drawn rearwardly, or upwardly of the root. This movement is continued until the hooks 18 engage and embracethe shingle at the inner end of the notch 12, and are guided to this position by the engagement oi the lateral notches 22 and 23 with the sides of the notch 12. The hooks 18 preferably are of greater width at their outer ends than at the inner,

such wider portions being guided to engagement with the'body portion of the shingle the hooks 18 meters 1 causes a greater frictional grip on the part engaged, but also tend to prevent mashing of the hooks in transportation 1 or handlingthem, either singly or in bundles. The bentup portions 19 between the hooks overlie the heads of the nails 21 and prevent their contacting with the. body of the superposed shingle or being pushed through the same; and in case more than one bent-up portion 19 is provided for each clip, then a similar number of nails would be employed adja cent each notch 12. This would be advisable in the event the notches 12 and projections 11 are of considerable width.

The doubled under edge oi the projections 11'are held by the hooked clips 13 in close contact with the shingle at the inner ends of the notches 12, which are in turn heldclcse to the/root by the nails 21. This tends to prevent the entrance of rain or other weather elements between the shingles, and in hot weather some of the plastic material of the shingle melts somewhat and seals the joints between the closely held adjacent shingles,

thus making a very tight roof covering.

lit is apparent that at the corners oi the notches, the shingle is held between two metal parts because of the lateral notches 22 and 23, and in .hot weather these metal parts become imbedded in the material or the shingle and form a further seal against the weather. As before stated, the double gripping of the end of the projections 11 by teeth extending in both directions pre-= vents a breaking of the folded portion, which because of its thickness forms a good joint not apt to be lifted from the roof. The clip 13 being enfolded between two thicknesses of shingle material and being underneath the projection 11 is prevented from rusting.

@ther advantages of this improved rootin element will be understood by those skilled in the art. For instance, this im proved roofing element with its interlocking means is so eilicient in excluding the weather that it'is ada ted for use on roofs which are are fiat or ave but slight pitch.

1 claim as my invention 1. A roofing element comprising a body formed on one margin with alternating pro= jections and notches, each roofing element ada ted to receive one or more nails adjacent the inner end of each notch, a clip fixed to the bottom side of each projection at its end and odset to form hooks adapted to engage the inner end of notch of a subjacent element, a ortion between the hooks of each clip being ent back to the plane of the clip to overlie the head of each nail in the subjacent element.

2. A roofing element comprising a body formed on one margin with alternate projections and notches, a clip underlying the end portion or? each projection and ofils'et to form hooks, said clip being formed with teeth extending in both ireetions from its body, the end pet'tien of the projection being folded emund the margin 0% the cliip and the teeth ef. the clip penetrating in bath directions the material of the said projectien to cause uniferm expsnsien and contraction thereef.

3. A roeffing element comprising .a boiiy formed on one margin with alternating projections and notches, a clip underlying the end portion 01 each projectien and offset to farm hanks, said book's being edncavo-cenvex crosssection emi e350 being of width at their enter than at their inner ends.

interlocking means fer a reefing element comprising a clip effset between its sides is form one or more necks the offset gaoriien efsaid clip being "farmed with Eaterafly epem'ng notches at its ends, the hcoks bemg szghtiy concave-convex an Cress-section with the convex surface arranged upwartiy toward the plane of the body 0:? the eiin.

DA IS. 

